Gmail failure 550-5.7.1

Gmail's 550-5.7.1 failure code could be due to a sudden ramp-up in sending volume, content of emails, or even the reputation of your domain/IP. It's not necessarily permanent, you might just need to slow down, check your message content, and monitor your sending practices. Contact Google Postmaster Tools Support to get specifics about what's causing the issue. More advanced email marketing platforms can also offer analytics and insights into delivery issues.

Your domain's bad rep might have expanded due to Outlook and Gmail sharing intel. No Outlook postmaster contact, but you can check domain/ip reputation on their SNDS platform. Email ain't dead, we just gotta dance with algorithms. Keep hustling!

UncLe Spam said:

@whosethis

was just told this:
Hey bro, just keep you updated: now seems hotmail disabled plain text login, force to use oauth2

And I tested both lution and bee account, lution already support OAuth2 smtp sending, where bee can not, bee can generate OAuth token too, but only for POP3

Click to expand...

Thanks bro!

Sigh, so it seems MailerKing is not an option anymore

Wonder what could be used to replace it now

ChriMCD said:

Gmail's 550-5.7.1 failure code could be due to a sudden ramp-up in sending volume, content of emails, or even the reputation of your domain/IP. It's not necessarily permanent, you might just need to slow down, check your message content, and monitor your sending practices. Contact Google Postmaster Tools Support to get specifics about what's causing the issue. More advanced email marketing platforms can also offer analytics and insights into delivery issues.

Click to expand...

Schmitzzer said:

Your domain's bad rep might have expanded due to Outlook and Gmail sharing intel. No Outlook postmaster contact, but you can check domain/ip reputation on their SNDS platform. Email ain't dead, we just gotta dance with algorithms. Keep hustling!

Click to expand...

thanks guys... its now been a few weeks since everything was turned off (soon as noticed the block issue per previous posts) - so nothing being sent from domain.net

Like I mentioned earlier, legit newsletter is sent form domain.com using a Tier 1 sender.
This started getting affected as well with Gmail showing them in Spam and Outlook blocking them (no connection to the other domain other than same name)

However more recently, Gmail has been showing emails from domain.com emails in inbox.
BUT Outlook (which was working again for a few days in between) has now has started blocking all emails form domain.com again!

Very confused by why that maybe

whosethis said:

Thanks bro!

Sigh, so it seems MailerKing is not an option anymore

Wonder what could be used to replace it now

Click to expand...

You need a mailer that supports OAuth2 and @social_newbie is working on one get in contact with him.

UncLe Spam said:

You need a mailer that supports OAuth2 and @social_newbie is working on one get in contact with him.

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thanks mate

Your issue is just people click Spam button and your IP gets flagged. You need to wait a long time, then warm up your IP again. Warm up for Gmail for cold emails is basically useless.

Sister Spam said:

Your issue is just people click Spam button and your IP gets flagged. You need to wait a long time, then warm up your IP again. Warm up for Gmail for cold emails is basically useless.

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thanks - letting it die is probably the best
the question is though how do you start inboxing en-mass on Gmail?

every few days some random newsletter signs me up and send me multiple emails loaded with graphics and links straight to my inbox multiple times a day - how are they able to inbox over and over?