mails are getting bounced buy 3rd party email massenger work on SMTP

I am looking for a freelancer who can help me with an issue I am experiencing with my email service. Specifically, my emails are getting bounced when using a 3rd party email messenger and working on SMTP. Here are the details of my project:

Email Service: Gmail
Device/Platform: Both desktop and mobile
Error Messages/Codes: None reported

Ideal Skills and Experience:

– Expertise in SMTP and email messaging systems
– Experience troubleshooting email issues
– Familiarity with Gmail and 3rd party email messengers
– Strong problem-solving skills
– Excellent communication skills to explain technical issues and solutions in non-technical terms

If you have the skills and experience I am looking for, please submit your proposal. Thank you.