Is there any tool out there that can help me do a sanity check on my tags, before posting up to e621?
I took a quick look at some of your recent posts, and it looks like a lot of the tag mistakes are copy-paste errors which couldn't easily be caught by any tool. They're valid tags, but they just don't apply to the images being uploaded.

For instance, this post [hyperlink] was initially tagged "male/male", "bound", "cock_ring", and "rating:s" [i.e., "Safe" rating]. But it is a solo picture (not M/M), doesn't show anyone bound, doesn't have a cock ring, and it certainly is not SFW.

By the way, in case it is useful, you can view the tag history on a post by clicking this link on the sidebar: https://prnt.sc/malr41DoDn8h . That could help with figuring out which of your tags are being removed/changed on your uploads.

Oooh, thank you!

That... is weird.
I think I entered BDSM (for the gear), which may have 'translated' to bound somehow.
I didn't enter rating:s either, so I'll check manually next time after using Postybird TwT

Some tags are considered as "duplicates" of another tag (i.e., aliases), thus they get "translated" to something else.
You'd have to check carefully of any tags you did not add yourself since that means that it was switched to another tag that could have a different meaning.

For example, tagging "gay" into a post automatically changes it to "male/male", which means that there are two or more males engaged in romantic or sexual activities.
This would obviously not apply to solo/single characters and this little mistake catches a lot of new taggers.

I highly advise using this and triple-check your tags before posting. Did they not send you any messages? Bans seem a tad extreme unless it was a ton of stuff and often.

https://re621.app/

It's a user script that adds a ton of functionality. Shows you incoming tag implications and aliases and such, can click each tag to open its wiki, etc. The site takes accurate tagging extremely seriously. They don't have to be perfect, but they can't miss important things people would want to blacklist or ideally search for. And they can't be outright inaccurate.

It's especially dangerous doing copy/paste for tags. If you do that, perhaps sort them into aspects of a picture and verify the tags apply when adding. I know that's a ton of effort, but they take it seriously.

You can look at things you have uploaded and click Tags/Desc under "history" to see the tag change history. Note that if something says (disambiguation) it means you should remove that tag and use something more specific, which may be outlined in the wiki article for the tag.

Take this for example:
https://e621.net/post_versions?sear....._id%5D=5688670

You added "slit" but it was aliased to slit_(disambiguation). As you can see in the tag history, someone replaced it with the more specific genital_slit.

And tag what you see (TWYS) is very important for e621 tagging. You tagged a knot for example on an image in which none was visible. Things very obvious by context can be tagged as long as they aren't something specific to something that could be visible. For example male_penetrating_male, anthro_penetrating_anthro, penis_in_ass could all be tagged for obscured_anal obscured_sex when both characters are clearly male and clearly having sex, even if you can't see the actual penetration. In fact even transgender characters that you can't tell at a glance must be tagged male or female. There are lore tags to correct that in those cases, and lore tags are not TWYS by definition.

Another big clue is to look at the number of tags when you enter it. That's another thing re621 helps with by showing you as you type, but always check after posting too. If there is a very low number of tag usages, it's probably a mistake. Not always, but it's worth looking into verifying if it's valid if it's a rare or especially new tag.

Some more examples:
Here you tried to use "pet," but someone replaced it with petplay because pet was ambiguous. It's questionable whether even that should be tagged here, by the way, because you can't see anything about that in the image itself. The person correcting it probably should have removed it:
https://e621.net/post_versions?sear....._id%5D=5610200

Here, swordplay isn't valid. In fact no one had removed it until now. Someone did remove knotted_penis, which isn't anywhere in the picture.
https://e621.net/post_versions?sear....._id%5D=5688667

For this one, note that swordplay has almost no images. So someone replaced it with swordfight, which does have many results. You tagged male/male, but that is exclusively for romantic or sexual content between at least two males. It should be duo and male only. No pawpads are there, so someone removed that too.
https://e621.net/post_versions?sear....._id%5D=5688661

There were so many changes here, just look for yourself:
https://e621.net/post_versions?sear....._id%5D=5686742

Notice here it looks like the artist and/or character owner themselves personally fixed a character and artist tag (that is a guess, but look at the history). You had "electic" and you probably meant "electric" but someone replaced that with the correct "electrostimulation." Notice someone replaced the ambiguous "cuffs" with "ankle_cuff" which implied the specific cuff_(restraint) and restraints.
https://e621.net/post_versions?sear....._id%5D=5674091

In this one, there is nothing even the ambiguous "pet" applies to:
https://e621.net/post_versions?sear....._id%5D=5612389

Those are a few examples, but open your prior uploads, open the tag history, scroll to the bottom and look at what is crossed out, and scroll up and see the changes be it that they were not valid for the post, or they were corrected by someone.

Note that in your record it asks that you message them after reading up on the tagging wikis. So I think it's the sheer volume of mistakes that resulted in the bans/upload restriction.

I'm really glad I happened to see this journal because I think I understand e621 tags fairly well. I can't keep up with my watched artists and almost never look at journals. I hope this helps!

Thank you for the really specific advice! Much appreciated, I'm glad you caught my journal.

I confess there is a generic set of tags that I use specific to each character, mainly to satisfy e621's minimum tag count.
Knot and pawpads are tied to Storm, so I'm now noting about the strict TWYS rule since you can't see those all the time.

I think I'll alter my approach to only use the tags I'm super sure about and rely on others to add more ><

Don't worry about that, if you need help with tagging there are a lot of people (particularly on the e621 Discord) that are willing to help.

If you have trouble finding the 10 minimum tags, you can check the tagging checklist which will provide to you a lot of the basic tags that is expected in a post.
https://e621.net/help/tagging_checklist

As someone whos been posting on e621 lately all i can say is if youre not sure look the tag up. The rules on the site are... wierd? And personally i use e621 rebot for posting its easier and quicker but tag mistakes slip through alot. I suggest always checking what you upload after you upload it to catch any invalid tags/incorrect tags.

Like for instance sometimes when i try to tag an artist on it the artist comes up but its a charater with the artists name so i have to change it and stuff the only thing you can really do is double and triple check it.

On the too few tags thing if you ever feel like theres not enough tags a small cheat i learned is just start listing exact features of a charater. Body color, hair color, how many toes and fingers lol works every time.

Never ever feel bad about it cause the rules on that site are quite wonky. Have you ever looked through them like realllly closely? The fact that if an artist decides to stop anything they make from being on there then anyone who paid for their art just isnt allowed to post it is kinda wild to me ngl

Yeaaaaaah I did get hit with a DNP before, it's super weird but eh.
That small cheat was what I did too, but as per the comment above, just realized I got penalized for tagging my Storm knot when his knot wasn't visible xD (oops)

For a while after my 1st ban I did manually check each post, but life gets busy and tbh I find it quite time consuming and stressful.
I'm a bit of an art slut so I guess this problem is kinda unique to me with my volume of posting...

Thanks for your help, mate!

There is conditional_dnp for artists that allow exceptions, but you need to read up on those exceptions. Most mean only the artist can post, but some do allow commissioners to post art.

Yeah i only really found out after i got like 2 strikes on my account cause i didnt know what it was... my main issue is that if the artist says so the person who bought and owns the art just isnt allowed to post it in there at all without the artists permission. Thats like buying clothes but not being allowed to wear it to a restaurant without the designers say so lol just kinda silly to me

Postybird has a tag suggestion feature and it can use e6's tags. I don't know if it checks them based on a local database or it updates them from the web, but they are there.

I use Postybird and didn't even know that function existed!
Usually, I'd write it all up in a text file then paste it in. I'll try this instead, thanks!

You said above that you use a specific set of tags for each character? You can also save tag groups. Unfortunately it doesn’t suggest you tags while in that mode. Put you can copy them while editing a pic and then paste them there. There’s a copy button at the end of the Tags line. Dunno if you need to push that first or you can just copy and paste right away…

I was sadly banned too, while it would be good for posting 18+ content for fun (For Adult who can make their Choices free fully) sadly they just wont let us.