Sent mail going to junk folder

Sent mail going to junk folder

I have just trialled Zoho Recruit as I am looking for a centralised database from which I can send emails, however the two test clients I have added send straight to Junk mail.

I have changed the TXT and SPF but it hasn't made a difference.

Please advise as I don't want to invest time setting up a database which I cant use!